the man behind all these numbers, nbc's senior political editor, mark murray, joins me now. mark, this is fascinating stuff, well-timed is and fascinating. it feels like abortion, the conversation about abortions feels kind of like the conversation about gay rights, where the country is changing on a bedrock issue. am i overstating it? >> no, you're not, and one of the fascinate things about politics is politics can change. bill mcinturff, the republican pollster who co-founded this survey ended up saying, this is a profound change. and it probably goes to saying why during the democratic primary we heard so many references to abortion, women's rights, and you look at these numbers right now, and the poll for the first time, there is a majority saying that abortion should be legal. previously, when we asked this question, only with one exception, the majority said it should be illegal, either with or without exception. so a really profound change here. >> can we go inside the numbers a little bit? i think it's interesting. do you guys have a sense on where that change has co